Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method (ISO 3675:1998); German version EN ISO 3675:1998— 9 стр.
Crude petroleum and liquid or solid petroleum products - Determination of density or relative density - Capillary-stoppered pyknometer and graduated bicapillary pyknometer methods (ISO 3838:2004); German version EN ISO 3838:2004— 25 стр.
